5 in 1 USB Hub with SD Card ReaderExpand one USB port to four USB ports and 2 card slots. Reverse Compatible USB 2.0 / USB 1.0. High Data transfer UAB SD Card ReaderSupport Transfer Speed up to 5Gbps (USB 3.0), USB 2.0 up to 480Mbps. let you transfer an HD movie in few seconds. Supports simultaneous reading and writing of two cards, which can realize card-to-card data.